Stalagmite-inferred European westerly drift in the early Weichselian with centennial-scale variability in marine isotope stage 5a

Autor: Yun-Chuan Chung, Laurie Menviel, Arianna Marchionne, Horng-Sheng Mii, Véronique Michel, Patricia Valensi, Xiuyang Jiang, Patrick Simon, Elena Rossoni-Notter, Abdelkader Moussous, Heikki Seppä, Yu-Tang Chien, Chung-Che Wu, Hsun-Ming Hu, Chuan-Chou Shen
Přispěvatelé: CLIMATE CHANGE RESEARCH CENTRE SCHOOL OF BIOLOGICAL EARTH AND ENVIRONMENTAL SCIENCES UNIVERSITY OF NEW SOUTH WALES SYDNEY AUS, Partenaires IRSTEA, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA), Department of Mathematics and Statistics [Helsinki], Falculty of Science [Helsinki], Helsingin yliopisto = Helsingfors universitet = University of Helsinki-Helsingin yliopisto = Helsingfors universitet = University of Helsinki, Department of Earth Sciences [NTNU Taipei], National Taiwan Normal University (NTNU), Culture et Environnements, Préhistoire, Antiquité, Moyen-Age (CEPAM), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UCA), Géoazur (GEOAZUR 7329), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD [France-Sud]), Histoire naturelle de l'Homme préhistorique (HNHP), Muséum national d'Histoire naturelle (MNHN)-Université de Perpignan Via Domitia (UPVD)-Centre National de la Recherche Scientifique (CNRS), Fujian Normal University [Fujian], Department of Geosciences and Geography [Helsinki], Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), High-Precision Mass Spectrometry and Environment Change Laboratory (HISPEC), National Taiwan University [Taiwan] (NTU)
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Quaternary Science Reviews
Quaternary Science Reviews, 2022, 288, pp.107581. ⟨10.1016/j.quascirev.2022.107581⟩
ISSN: 0277-3791
DOI: 10.5281/zenodo.7386290
Popis: TheWeichselianglaciationis characterized by significant ocean circulation variations starting from ∼115 thousand years ago (ka) and terminating at ∼11.5 ka. The earlyWeichselian(115–74 ka), especiallymarine isotope stage(MIS) 5a at 85–74 ka, provides a window for understanding the linkage between the European westerlies andMediterranean climate. However, lack of highly-resolvedpaleoclimaterecords with absolute chronologies hampers our knowledge of decadal-to-centennial-scale climate changes and forcings in the circum-Mediterranean realm. Here, we present230Th-dated stalagmite-inferred hydroclimate records from Observatoire cave (43°44′ N, 7°25′E), Monaco, for the period between 88.7±0.4 and 80.3±0.1 ka, covering portions of MIS 5b and 5a. Agreement between Observatoire and circum-Mediterraneanstalagmiterecords confirm large-scale warming over the Atlantic-Europe territory during the transition from MIS 5b to 5a. Subdecadally-resolved Observatoire δ18O and δ13C records express four multi-centennial arid intervals in southern Europe at 84–80 ka in the first-half of MIS 5a, suggesting centennial westerly drifts, a finding supported by a model simulation. Westerly changes and associated arid events can be attributed to slowdowns of the Atlantic meridional overturning circulation,North Atlantic Oscillationstates, and solar activity.
Databáze: OpenAIRE
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